Reading F2812 peripheral registers during debug

Gary Lynch

Other Parts Discussed in Thread: TMS320F2812, CONTROLSUITE

I am attempting to debug an F2812 project with a SD XDS510LC
USB emulator, and want to watch the contents of some
peripheral registers (CAN engine in particular) when the
processor is stopped. The drop-down menu View >> Registers
command shows me 'Core registers' and that's all.

I have looked back at all the test projects I have developed
so far (only about a dozen) and some of them have all the
peripheral registers in this same window, while others do
not. I can find no rhyme nor reason for this difference.

A response to a post on this forum says the viewable
registers are determined by an xml file. None of my
projects have a file with extension .xml, but they all have
one ending in .ccxml. I can see nothing in there related to
registers.

Some of my projects have a file with extension .ccxml.cache,
and I can see definitions of the 'Core registers' therein,
but nothing resembling a peripheral register. Furthermore,
there is no correllation between projects whose peripheral
registers are visible, and projects containing this file
type.

Another post says we should read their raw hex addresses
with the memory command. I don't want to pay all this money
for an emulator and be forced to resort to such an error
prone debugging process. (Especially when the emulator can do
it some of the time!)

How can I take control of my peripheral registers, and
access them on ALL projects?

over 14 years ago

0 Ki over 14 years ago

TI__Guru**** 472441 points

Hi Gary,

Gary Lynch said:
A response to a post on this forum says the viewable
registers are determined by an xml file. None of my
projects have a file with extension .xml, but they all have
one ending in .ccxml. I can see nothing in there related to
registers.

The xml file being referred to are xml files that comes with the CCS install and not any xml file in your project. these files exist in

.\ccsv4\common\targetdb\Devices

In your case it would be 'f2812.xml'. This file pulls in several module xml files that define the registers.

Gary Lynch said:
How can I take control of my peripheral registers, and
access them on ALL projects?

Make sure your target configuration ccxml file uses the f2812 device xml file. How can you confirm this? In the advanced tab of target config editor and see if there is an additional node (TMS320F2812_0). This confirms that the device XML file is being used.

EXAMPLES

GOOD (being used):

BAD (not being used):

If you use the basic tab to pick the connection and device, it should automatically use the device xml file.

Thanks

0 Gary Lynch over 14 years ago in reply to Ki

Expert 1310 points

On Friday, October 21, 2011 12:00 PM; Ki-Soo Lee wrote:
>
> Make sure your target configuration ccxml file uses the
> f2812 device xml file. How can you confirm this? In the
> advanced tab of target config editor and see if there is an
> additional node (TMS320F2812_0). This confirms that the
> device XML file is being used.
>
I followed your steps to the screen reproduced here:

As far as I can tell, I always had TMS320F2812_0 specified
in my ccxml file, and as you can see, I still have only
'Core Registers' in the REGISTERs window.

0 Ki over 14 years ago in reply to Gary Lynch

TI__Guru**** 472441 points

hmm. I see it in my install. What is the full version number of you CCS install? Can you attach your ccxml file?

0 Gary Lynch over 14 years ago in reply to Ki

Expert 1310 points

On Friday, October 21, 2011 1:55 PM; Ki-Soo Lee wrote:
>
> What is the full version number of you CCS install?
>
I have 4.0.1.01001.

>
> Can you attach your ccxml file?
>
I hope you mean 'embed', which I can do. This is my
[target].ccxml file in the project directory:
]
] <?xml version="1.0" encoding="UTF-8" standalone="no"?>
] <configurations XML_version="1.2" id="configurations_0">
] <configuration XML_version="1.2" id="Spectrum Digital C2000 XDS510LC Emulator_0">
]         <instance XML_version="1.2" desc="Spectrum Digital C2000 XDS510LC Emulator_0" href="connections\SD2000USB_Connection.xml" id="Spectrum Digital C2000 XDS510LC Emulator_0" xml="SD2000USB_Connection.xml" xmlpath="connections"/>
]         <connection XML_version="1.2" id="Spectrum Digital C2000 XDS510LC Emulator_0">
]             <instance XML_version="1.2" href="drivers\sdgo28xusb_xds510lc.xml" id="drivers" xml="sdgo28xusb_xds510lc.xml" xmlpath="drivers"/>
]             <platform XML_version="1.2" id="platform_0">
]                 <instance XML_version="1.2" desc="TMS320F2812_0" href="Devices\f2812.xml" id="TMS320F2812_0" xml="f2812.xml" xmlpath="Devices"/>
]             </platform>
]         </connection>
]     </configuration>
] </configurations>
]

and this is my f2812.xml file in the IDE tree:
]
] <?xml version="1.0" encoding="UTF-8"?>
] 
]
]
] <device id="C28xx" partnum="TMS320F2812" HW_revision="1" XML_version="1" desc="TMS320F2812" description="">
] <instance href="..\cpus\c28xx.xml" desc="C28xx" description="" id="C2800" isa="TMS320C28xx" xml="c28xx.xml" xmlpath="..\Cpus\" />
] <cpu HW_revision="1.0" XML_version="1.2" description="CPU" deviceSim="false" id="C2800" isa="TMS320C28xx">
]   <property Type="filepathfield" Value="..\..\emulation\gel\f2812.gel" id="GEL File"/>
]   
]    <property Type="stringfield" Value="--large_memory_model --silicon_version=28" id="CompilerBuildOptions" />
]     
]     <property Type="stringfield" Value="2812_RAM_lnk.cmd" id="LinkerCmd" />
]     <property Type="stringfield" Value="rts2800_ml.lib" id="RTSlib" />
]   
] </cpu>
] </device>
]

I have located a path down to a set of xml files that define
all the peripheral registers:

f2812.xml
   +--c28xx.xml
   |   +--C28xNotVisible.xml
   +--C2000_ADC_Type0_Registers.xml
   +--281x_System_Control_Registers.xml
   +--C2000_Code_Security_Module_Registers.xml
   +--C2000_PWL_Registers.xml
   +--C2000_CPU_Timer_Registers.xml
   +--281x_Device_Emulation_Registers.xml
   +--C2000_eCAN_A_Type0_Registers.xml
   +--C2000_eCAN_A_Type0_Local_Acceptance_Masks.xml
   +--C2000_eCAN_A_Type0_Message_Object_Time_Stamps.xml
   +--C2000_eCAN_A_Type0_Message_Object_TimeOut.xml
   +--C2000_eCAN_A_Type0_Mailbox_Registers.xml
   +--C2000_EV_A_Type0_Registers.xml
   +--C2000_EV_B_Type0_Registers.xml
   +--C2000_Flash_Type0_Registers.xml
   +--C2000_External_Interface_Type0_Registers.xml
   +--281x_External_Interrupt_Registers.xml
   +--281x_GPIO_Registers.xml
   +--C2000_McBSPA_Type0_Registers.xml
   +--C2000_PIE_Registers.xml
   +--C2000_SCI_A_Type0_Registers.xml
   +--C2000_SCI_B_Type0_Registers.xml
   +--C2000_SPI_A_Type0_Registers.xml

which matches your description exactly, but I got this from
a co-worker's workstation. All the peripheral register links
are missing in mine, so that file got clobbered somehow.

Do I have to wipe out CCSv4 and install it all over again?

0 Ki over 14 years ago in reply to Gary Lynch

TI__Guru**** 472441 points

Gary Lynch said:
I have 4.0.1.01001.

This is a pretty old version. the f2812.xml file in that install is missing the references to the module xml files with the register definitions.

Gary Lynch said:
Do I have to wipe out CCSv4 and install it all over again?

You may be able to drop in updated xml files but I would strongly recommend updating your version of v4. CCS for C28x didn't really get stable until 4.2.x. You can run the updater and incrementally update to 4.2.4.

What confuses me is your earlier comment that some projects had the registers visible and some do not and there was no rhyme or reason. Are you saying that the same CCS 4.0.1 had some projects where the registers appeared?

0 Gary Lynch over 14 years ago in reply to Ki

Expert 1310 points

On Friday, October 21, 2011 2:28 PM; Ki-Soo Lee wrote:
>
>

Gary Lynch said:
I have 4.0.1.01001.

> This is a pretty old version. the f2812.xml file in that
> install is missing the references to the module xml files
> with the register definitions.
>
>

Gary Lynch said:
Do I have to wipe out CCSv4 and
> install it all over again?

>
> You may be able to drop in updated xml files but I would
> strongly recommend updating your version of v4. CCS for C28x
> didn't really get stable until 4.2.x. You can run the
> updater and incrementally update to 4.2.4.
>
> What confuses me is your earlier comment that some projects
> had the registers visible and some do not and there was no
> rhyme or reason. Are you saying that the same CCS 4.0.1 had
> some projects where the registers appeared?
>
I was trying to keep this simple, but that is now blowing up
in my face. My original environment, installed in July,
2010, was on a 6-year-old workstation, and ran so slowly that
I decided to buy new hardware.

That arrived in July of this year, and I had it installed
from the same CD as the old workstation. At that point, I
stopped using CCS on the old workstation, got a new licence
ID number, and left CCS on the old workstation. As long as I
don't try to use them simultaneously, nothing happens.

I also have never been able to install CCS myself, and had
to hand the job off to our MIS guy. He told me both times he
had installed all the updates.

So the version on the old workstation (which I haven't tried
to maintain) is 4.1.3.00038. Most of the projects are there,
and some show peripheral registers, while others don't. None
of my projects on the new workstation can view peripheral
registers.

Although I receive routine e-mail notifications to update
controlSuite, I have never received one for CCS. My co-
worker, who bought his IDE at the same time, DOES receive
routine notifications. This may explain how I got so
out-of-date.

I used the menu command Help >> Software updates >> Find and
install... to upgrade. After the download I got a warning
from Windows:
"This feature has not been digitally signed. The
provider of this feature cannot be verified."

which I ignored. It then let me upgrade to 4.0.2.01003. When
I tried again, it said there were no more upgrades
available. (When I bought my service contract, I must have
gotten one in second class.)

My new f2812.xml file is dated 08/31/09, but it does have
the peripheral register references.

I re-build my most recent application, and behold: the
peripheral registers have appeared!

Thanks.

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Reading F2812 peripheral registers during debug